They cause 50% more pollution and fuel consumed due to vehicles slowing down and then accelerating between humps.

They are lethal to motorcyclists and cyclists when covered with leaves and adverse weather conditions such as snow, ice and heavy rain.

They increase noise levels from vehicles slowing down and re-accelerating.

They cause tremors from heavy vehicles passing over them that damage adjacent walls and buildings.

They cause tremors that damage the sub structure of the road.

If lewisham hasn't noticed Garlies road is predominantly residential!